Recent content by bilzebor

yes I'm wondering why we use isospin doublet only for the first generation of quark I thought it was because for the 2nd and 3rd generations the masses of the quarks are different, but up and down quarks also have different masses (I'm a graduate student)

I meant the quantum number that characterizes up and down quarks, so the isospin I don't really understand why there is only one for the first generation, and two for the other generations sorry if I'm not clear

hello, in the model of quarks, each of them is described by a flavor, but the quantum number for the first generation of quarks is the same (the isospin) for the up (1/2) and down (-1/2) quark. For the other generation though it is a distinct number (s,charm,...) for each quark. From what I...